Pennsylvania Route 199

US 309 was concurrent

Norfolk Southern and operated by the Lehigh Railway, and turns to the north. The road runs between homes and commercial development to the west and farm fields to the east a short distance west of the Chemung River. PA 199 curves east and crosses the Chemung River into the borough of Athens, where it heads into residential areas and turns north onto South Main Street. The route continues past homes a short distance to the west of the Susquehanna River before it passes through the downtown area of Athens, becoming North Main Street upon crossing the Lehigh Secondary at-grade in an industrial area. The road heads past residences and crosses into the borough of Sayre, where the name changes to South Keystone Avenue. PA 199 runs past a mix of homes and businesses in Sayre, becoming North Keystone Avenue at the West Lockhart Street intersection. Farther north, the route turns east-northeast onto Mohawk Street and passes through residential areas. The road turns north-northeast and becomes Spring Street, running past businesses and crossing the Lehigh Secondary at-grade again. The road curves north and passes more commercial development before bending to the northwest. PA 199 comes to the eastbound entrance/exit ramp for the NY 17 freeway before reaching the New York state line, where the road becomes NY 34 and immediately passes under NY 17 prior to the westbound entrance/exit ramp for the I-86 freeway.^[2][3]

US 309 was designated concurrent with US 220 between Towanda and Waverly, New York.^[8] By 1964, the concurrent US 309 designation was removed from this portion of US 220 when the northern terminus of that route was cut back to Tunkhannock.^[9][10] In 1974, US 220 was realigned to a freeway bypass to the west of Athens, Sayre, and South Waverly, and PA 199 was designated onto the former alignment of US 220 from south of Athens to Mohawk Street in Sayre as well as previously-unnumbered Mohawk and Spring streets to connect to NY 17 and NY 34 at the state line.^[11][12] The current southern terminus of PA 199 is about 300 feet (91 m) north of the original southern terminus at US 220. The original road met US 220 at a much sharper angle than the present intersection which was built in 2008.^[1]